PEAK6 LLC's ownership history for BIIB

PEAK6 LLC currently holds 17.3K shares with a market value of $2.2M. It started holding BIIB on 2024-12-31. At its peak, it held 30.6K shares on 2025-03-31. Its highest holding value was $4.2M on 2025-03-31. At its lowest, it held 8.8K shares on 2024-12-31, with a value of $1.3M on 2024-12-31. In the recent 180 days, PEAK6 LLC has increased its shares by 8.5K.

It has also owned 1.1K contracts of calls, with the market value of the underlying securities totaling $18.5M on 2024-12-31. At its peak, it held 1.3K contracts of calls on 2025-09-30 and it owned calls with the market value of the underlying securities totaling $18.5M on 2025-12-31. At its lowest, it held 127 contracts of calls on 2024-12-31 and it owned calls with the market value of the underlying securities totaling $1.9M on 2024-12-31. In the recent 180 days, PEAK6 LLC has increased its holdings by 455 contracts.

It has also owned 927 contracts of puts, with the market value of the underlying securities totaling $16.3M on 2025-03-31. At its peak, it held 927 contracts of puts on 2025-12-31 and it owned puts with the market value of the underlying securities totaling $16.3M on 2025-12-31. At its lowest, it held 80 contracts of puts on 2025-03-31 and it owned puts with the market value of the underlying securities totaling $1.1M on 2025-03-31. In the recent 180 days, PEAK6 LLC has increased its holdings by 11 contracts.